Corrugated metallic plate



Sept. 24, 1929. G. G. GILPIN Y CORRUGATED METALLIC PLATE Filed Feb n a on a o a 0 c a c Q e a oanoaaoneaane aocooouoaeaooanauoaQoooee Attori; eg

Patented Sept. 24, 1929 UNITED STATES ,PATENT OFFICE GARTH G. GILPIN, OFRIVERSIDE, ILLINOIS, ASSIGNOR TO UNION METAL PRODUCTS COMPANY, OFCHICAGO, ILLINOIS, A CORPORATION 0F DELAWARE CORRVUGATED METALLIC PLATEApplication mea February 9,1928. sei-iai No. 253,1sa

My invention relates to the construction of vrailway cars, and moreparticularly to wall structures made of one or more metallic plates orpanels formed with integral reinforcing, stiening and bracingembossments or corrugations. Car wall structures frequently requiresmall doors therein for loading lumber, rails or other similar longmaterial or for the installation of ventilators When the car is used toconvey perishable lading, such as fruits, etc. Railway stock carsrequire openings therein for loading sheep, hogs, or oth er smallanimals. When the wall or other car structure is made of a corrugatedmetallic plate it is desirable to form the corrugated or embossedmetallic plate so that the cutting of the door opening therein will notreduce the strength of the corrugations, or at. least, will reduce theirstrength a very small amount.

The object of my invention is to provide a door opening in a corrugatedor embossed metallic plate and to so form the corrugations orembossments that their strength will not be materially reduced.

Another' object is to provide a door opening in a corrugated or embossedmetallic plate and form the corrugations or embossments so as to berelatively rigid adjacent the door opening and relatively resilientadjacent the frame members of the car to which the metallic plate issecured.

Another object of the invention is to provide a panel for a door openingin a metallic plate, which plate is provided with a plurality ofcorrugations, some of which merge into the panel and others of whichextend continuously across the plate to opposite sides thereof.

In the drawings:

Fig. 1 is a typical application of my structure as used for an end wallof a railway boX car.

Fig. 2 is a section on line 2 2 of Fig. 1.

Fig. 3 is a detail of a typical metallic plate.

Fig. 4 is an end view of Fig. 3.

Figs. 5 to 9 inclusive are sections on lines 5 5 to 9 9 respectively ofFig. 3.

Fig. l() is a fragmentary section showing the application of a typicalIdoor frame.

(such as shown in Fig. l0) or door may be used with my construction. Thedrawings, however, show a slidable door l2 mounted in ak four sided castmetal door frame. The door frame is preferably of such form andconstruction and is secured to the metallic plate so as to transmit anyhorizontal loads imposed thereon to the oppositely disposed embossments;or in other words, to make the aligned embossments (such as 13 and 13)in effect, a continuous beam from one edge to the opposite edge thereof.

The plate is formed with a plurality of pri mary corrugations orembossments 2O which spring from the opposite sides of the panel 7 andwhich preferably decrease in width and decrease in depth and terminateinto the plate adjacent the opposite edges of the plate or adjacent theframe members of the car (corner post 3 3, for instance) to which theplate is secured. Terminations 21 may be provided if desired. The plateis also provided with secondary corrugations or embossments 22 whichspring from the plate adjacent the panel and terminate into the plateadjacent the opposite edges thereof or adjacent the frame members of thecar to which the plate is secured and may Valso be provided withterminations 23 if desired. The ends of the primary corrugations` orembossments are substantially equal in width to the outer ends of thesecondary corrugations or embossments and are spaced apart dis yancesequal to their widths. The ends of the primary and sec.- ondarycorrugations and cmbossments, as well as the portion of the platebetween the corrugations and embossments, are formed with a curvedcontour so as toform asinuous and resilient structure. (See Fig. 9.)These secondary corrugations or embossments preferably terminate intothe plate in alignment with the primary corrugations or embossments. Theportion of the plate adjacent the raised panel (see Fig. 8) is formedwith embossments 2O preferably spaced apart distances equal to theirwidth and the embossments preferably have arcuate (with large radii)tops 2T and the portions of the plate 28 between the embossments arealso preferably arcuately formed (with large radii) and are preferablydeeper (28) than the secondary corrugations or embossments 22, whereby astructure is provided which is relatively stronger and relatively morerigidj than the section ofthe plate (Fig. 9) through the ends of thedivided port-ions 23 of the embossments.

The plate is also preferably formed with a eorrugation or embossment30u81 en one or both sides of the panel which decreases in width anddecreases in height toward their opposite ends and terminate into theplate preferably in alignment with the primary and secondarycorrugations or embossments. These corrugations or embossmentspreferably terminate adjacent the terminations of the primary andsecondary corrugations or embossments and are equal in width thereto andspaced therefrom a distance equal to their width so as to form a sinuousresilient structure (see Fig. 9) furthermore, the middle of thesecorrugations or einbossments correspond in contour to the corrugationsor embossments adjacent the panel to co-operate to form a contiguous andsinuous configuration.

Corrugated metallic plates, such as shown in the drawings, are formedbetween dies mounted in the platens of a reciprocating press and it hasbeen found that in forming such a1 flat panel, as herein shown anddescribed, that the metal wrinkles and is deformed so that when a partof the panel is cut out to make the door opening` that the metal so cutout cannot be used for other purposes without being straightened. lovercome this objection by forming a continuous web 33 around theportion of the plate to be out out for the aperture which eliminates thewrinlrling and bending so that after the plate is pressed the portion ofthe plate cut out for the aperture is not scrapped, but in fact, is usedto form the door (l2) for the individual plate. A flat portion 84 isleftbetween the continuous web 33 and the edge of the door opening forattachment of a door frame.

The accompanying drawings illustrate the preferred form of theinvention, though it is to be understood that the invention is notlimited to the exact details of construction shown and described, as itis obvious that various modifications thereof within the scope of theclaims will occur to persons skilled in the art.

In my co-pending application Serial No.

253,182, filed February 9, 1928, I have disclosed and claimed certainfeatures which are disclosed but not claimed in this application.

l claim: l. In a railway car structure, a metallic plate formed with araised panel provided `with a door opening, said plate also formed witha plurality of embossment-s springing from the opposite sides of thepanel which decrease in w'dth and terminate into the plate adjacent theopposite edges thereof.

2. ln a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality. of embossments springing from the opposite sides of the panelwhich decrease in width and decrease in height before terminating intothe plate adjacent the opposite edges thereof.

3. ln a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality of embossments springing from the opposite sides of the paneland terminating into the plate adjacent the opposite edges thereof andsecondary embossments springing from the plate adjacent said panel andterminating into the plate adjacent the opposite edges of the plate.

4l. ln a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality of embosssments springing from the opposite sides of the panelwhich decrease in width and decrease in height before terminating intothe plate adjacent the opposite edges thereof and secondary embossmentsspringing from the plate adjacent said panel which increase in width andincrease in height before terminating into the plate adjacent theopposite edges of the plate.

5. In a railway car structure, a metallic plate formed with a raisedpanel provided with a. door' opening, said plate also formed with aplurality of embossments springing from the opposite sides of the paneland ter minat-ing into the plate adjacent the opposite edges thereof andsecondary embossments springing from the plate adjacent said panel andterminating into the plate adjacent the opposite yedges of the plate inalignment with said embossments.

6. In a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality of embossments springing from the opposite sides of the panelwhich decrease in width and decrease in height he# fore terminating intot-he plate adjacent the opposite edges thereof and secondary embossmentsspringing from the plate adjacent said panel which increase in width andincrease in height before terminating into the plate adjacent theopposite edges of the,

plate, said primary and secondarT emboss.-

ments merging together to form a sinuous the plate adjacent the oppositeedges thereof and resilient structure.

7. In a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening and a flat margin surrounding saidopening for attachment of a door frame, said plate also formed with aplurality of embossments springing from the opposite sides of the paneland terminating into the plate adjacent the opposite edges thereof.

8. In a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening and a flat margin. surrounding saidopening for attachment of a door frame, said plate also formed with aplurality of embossments springing from the opposite sides of the paneland terminating into the plate adjacent the opposite edges thereof andsecondary emleossments springing from the plate adjacent said panel andterminating into the plate adjacent the opposite edges of the plate.

9. In a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality of embossments springing from the opposite sides of the paneland terminating into the plate adjacent the opposite edges thereof,secondary embossments springing from the plate adjacent said panel andterminating into the plate adjacent the opposite edges of the plate, anda corrugation formed in the plate on each side of the panel terminatinginto the plate adjacent the opposite edges thereof.

l0. In a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality of embossments .springing from the opposite sides of the paneland terminating into the plate adjacent the opposite edges thereof,secondary embossments springing from the plate adjacent said panel andterminating into the plate adjacent the opposite edges of the plate, anda corrugation formed in the plate on each side of the panel terminatinginto the plate adjacent the opposite edges thereof in alignment withsaid primary and secondary embossments.

ll. In a railway car structure, a metallic plate formed with a raisedpanel provided with a door opening, said plate also formed with aplurality of embossments springing from the opposite sides of the panelwhich decrease in width and decrease in height before terminating intothe plate adjacent the opposite edges thereof, secondary embossmentsspringing from the plate adjacent said panel which increase in width andincrease in height before terminating into the plate adjacent theopposite edges of the plate, and a corrugation formed in the plate oneach side of the panel which decreasev in width and decrease in heightbefore terminating into in alignment with said primary and secondaryembossments.

GrARTIaI G. GILPIN.

